Textile-twister.



J. L; MACFARLANE.

TEXTILE TWISTER. APPLICATION FILED JUNE 28. I9H- RENEWED JAN. I3. I91]-lww mfi m Patented Jul 17, 1917.

lu -1 WITNE SSES:

If l l III.

'IEXTILE-TWISTIER.

Specification of Letters Patent.

Patented .nli 17,191'3.

Application filed June 28, 1911, Serial No. 635,845. Renewed January 13,1917. Serial No. 142,311.

To all whom it may concern:

Be it known that I, JAMES LLoYn MAO- FARLANE, a citizen of the UnitedStates, and a resident of Atwoodville, in the county of Tolland andState of Connecticut, have invented certain new and useful Improvementsin Textile-Twisters, of which the following is a specification.

The present invention is concerned with an improved mechanism fortwisting together fine strands of textile material. The

' that the machine may be adapted for the handling of other fine textilestrands for the manufacture of thread, but it is to be under stood thatthe machine is designed and intended for use on this fine textile workas distinguished from cord or rope machinery or wire covering machinery,since this machine is no more adapted to that type of work than is ropeor wire winding machinery adapted for handling fine textile strands.

The present practice in the manufacture of organzine is substantially asfollows: The primary strands are first spun backward any desired numberof turns to the inch, for instance, 16 turns. The two strands thus spunare then twisted together in the opposite direction, 14 turns to theinch. The present method of twisting the strands causes them to spin,but since they have been already spun in a reverse direction, thespinning which is incident to the twisting results in taking out theoriginal spin, although it is desirable to leave a spin of about twoturns to the inch in the thread. The twisted thread is thensteam-stretched to avoid any possibility of its kinking. If two strandswere twisted together under the present practice without the preliminaryreverse spinning, each strand would be spun on its own axis, and theresulting thread, in spite ofany steam-stretching which might be givenit, would kink and snarl to such an extent that it could not be used.This practice, of course, necessitates the use of an ad ditional set ofspinning machines and a resulting increase in power used and floor spacerequired and so materially increasing the cost of the product.

The object of my invention is to produce a machine for twisting togethertwoor more primary strands of silk or other fine textile material toproduce a thread in such a way as to obviate the necessity of resortingto this preliminary operation and still produce a straight solid threadwith no tendency to kinking or snarling.

I have illustrated my invention in a very simple form in which it isused in the manufacture of two thread organzine, but 'it will beunderstood that it will be adapted for use in any case where it isdesired to twist together two strands of silk or light textile materialand that beyond this the invention is not concerned with the nature orcharacter of the resulting thread or the use to which it is to be put.

Referring. to the drawings- Figure 1 is a front view of the machineembodying my invention.

Fig. 2 is a side view thereof.

Fig. 3 is a detail view of the stop motion.

Fig. 4 is a detail View of the bobbin spindle.

Before proceeding to describe the machine forming the subject matter ofthis invention, I desire to call particular attention to the fact thatany twister handling these fine textile strands must operate at a veryhigh rate of speed in order to produce the resulting thread insufiicient quantities to bring the cost of manufacture, a material partof which is the power required to drive the machine, down to the lowestpossible point. The speed of rotation which it is desired to attain isfrom ten to fourteen or fifteen thousand R. P. M. And when the veryfragile nature of the strands which, are

being dealt with is considered, it will be realized that a very carefulandparticular organization of the machine is required to do the worksatisfactorily. Lightness of the parts, balance, absence of vibration, aminimum of bearing points, and other features of construction, are ofgreat practical importance in the successful operation of a machine ofthis character.

' "Referring to-the drawings a denotes the frame of the machine, b b areshaft bearings; o'istheshaft supported thereby and adapted to be drivenin any suitable manner as by a belt .dfi Supported in the .upper end ofthe shaft,but not rotatable therewith, is 7 thebobbin spindle 1 whichhas a stem 2 to receive the bobbin-3. The material'feature of thisconstruction is that the bobbin carried by the stem 2 shall beyieldingly connectedwith the bobbin spindle l in order .to eliminatevibration. of the bobbin and to ireduce the frictional contact betweenthe ":c' fbobbin spindle and the flier spindle. As i shown, thisyielding connection is constiiv g-jtuted of-the spring 2 ,"whichconnects the spindle 1 with the. stem 2, this spring 2' ab- 'sorbingsuchvibration as the-bobbin may be i 1 subjected to. It will be seenfromthe drawingsjf that the. shaft is inclined slightly and theYspringstem is offset slightly so as to normally. cause the bobbin to occupythe same ipositionjand 1 prevent its rotation.

r "-Rotarily mountedbnthe top of this bobbin ;is a flier 10 having anarm 11 with an eye jl2atits end through which the strand from thisbobbinispassed up to another eye 13 arranged aboutin alinement with theaxis of Located underneath the shaft is the see ond bobbin 20 suitablysupported and prointo the'shaft below the lower bearing and :3 outthrough an aperture 38 in the side of the Shaft at 'a point above.theupper bearing. Secured toflthe shaft-just below the upper bobbin is'a twister or winderprovided *with an. arm 31-having an eye 32.

-A spool '40 is operated by the fri'ctionrollj 41' 'andfon this thetwisted thread. is wound 1 I up,;this spool acting to draw thestrands'of the two bobbins 3, 20. a Y 5O denotes the strand drawn fromthe upper bobbin 3 and the strand drawn "from the lower bobbin 20. Ifthe tension on fthes'e two strands is uneventhat? strand 55. core aboutwhich the other strand which is more tightlydfawn will form a I fjthetension on the two strandsjis uni-' form'one will not wind about theother but both will be evenly twisted together. In the drawings, thelower strand isshown aslwrapped about the upper strand which forms acore, but it is tobe clearly understood that these conditions can ,beexactly c reversed by' changing the tension and the elower strand canconstitute the core While the upper strand is wound about it, and

that by equalizing the tension on both strands they can be evenlytwisted together to produce the best quality of thread.

Another pecularity and an essential in the constructlon of my machlne,in order to permit of twisting the two. unspun strands together withoutspinning during the twisting operation, is that the lower strand iscarried bythe twister 30 in a path which entirely incloses the upperbobbin, so that in efiect the upper bobbin is inclosed by the path ofmovement of the lower strand during the twisting operation. Thestructure illustrated which una kes this possible is the supporting ofthe upper bobbin by the shaft and carrying the strand from the lowerbobbin through the shaft. When the machine is in operation and runningat the high speeds at which machines of this character operate, theupper bobbin is in effect wholly inclosed by the strand from the lowerbobbin and is absolutely inaccessible in any way and from any direction.

, When the bobbins are arranged in upright position as shown in thedrawings, and which is the usual arrangement in machines of thischaracter, neither one rotates. on its own axis or revolves about anaxis outside of itself. To rotate either or both of the bobbins on theirown axes under such conditionswould put a spin in the thread, the verything which this machine is designed to prevent, and the same resultwould fol low if the lower bobbin revolved about an axisoutside ofitself. Such an arran ement, however,is not necessary to permit 0drawingthe thread off the bobbin without twisting. However the bobbinsare arranged in this respect my machine provides means for twisting twounspun strands together without spinning either strand or the resultingthread during the twisting operation. This obviates the necessity ofperforming the preliminary operation of spinning the in- .dividualstrands in a direction opposite to that in Which the twisting operationtalzes place, thus saving the cost of the spinning machines and thepower to run them and the time consumed in the spinning operation, .andso materially decreasing the cost of the product. The two bobbins mightbe arranged so that they do rotate, but they are not to be arran ed sothat their rotation will I assist in the twisting operation.

Owing to the fact that the strand 60 from "the lower bobbin sweepsentirely around or revolves about the upper bobbin, it is neoessary toprovide some stop motion to be operated' when the strand 50 from theupper bobbin breaks, which sto motion must be located inside of the patof movement of the strand 60 from the lower bobbin. A simple form ofdevice is illustrated comprising bale pivotally supported on the flier10 asagna and which is normally held up in the position indicated in thedrawings by the strand 50 from the upper bobbin. When this strand breaksthe bale drops with its eye 44: extending beyond the edge of the bobbinflange and the strand 60 from the lower bobbin catches in this eye andis broken.

To prevent the strand 60 from catching on the flier arm 11 and eye 12 ofthe upper bobbin, I bow the arm and form the eye on the inside of thearm toward the bobbin, with the result that the bowed part of the armoperates as a guard.

While I have illustrated the invention as used for winding but twostrands together, it is apparent that-it will operate with any number ofstrands or bobbins in the same way.

The spring stem 2 for the bobbin 3 is provided so as to eliminate as faras possible the vibration due to the operation of the machine, thustending to hold the bobbin steady and prevent its rotation.

It is, of course, apparent that the strands can be carried on otherdevices than the bobbins illustrated, and I do not wish to be understoodas being limited to the use of the exact structure illustrated anddescribed herein. The terms used herein are terms of description and notof limitation.

I claim as my invention:

1. In a machine of the character described for twisting together strandsof silk or like textile material, bearings, a spindle supported thereinat one end and having a passage through it from one side of saidbearings to the other, means for driving said spindle, a flier mountedon the free end of said spindle, a non-rotatable bobbinholder yieldinglysupported by and unbalanced with respect to said rotating spindle, abobbin mounted therein, a second bobbin mounted at the opposite side ofsaid bearings from the first mentioned bobbin and with its strandextended through the passage in said spindle outside of said firstmentioned bobbin, and engaged by said flier, and a receiving carrier towhich the strands from both bobbins are attached.

2. In a machine of the character described for twisting together strandsof silk or like textile material, bearings, a spindle sup ported thereinat one end and having a passage through it from one side of saidbearings to the other, means for driving said spindle, a flier mountedon the free end of said spindle, a non-rotatable bobbin-holderyieldingly supported by and unbalanced with respect to said rotatingspindle, a bobbin mounted therein, a second bobbin mounted at theopposite side of said bearings from the first mentioned bobbin and withits strand extended through the passage in 'said spindle outside of saidfirst mentioned bobbin and engaged by said flier, a receiving carrier towhich the strands from both bobbins are attached, and a sto motionbetween said first mentioned bob in and said carrier and with which thestrand from said first mentioned bobbin is engaged.

3. In a machine of the character described for twisting together strandsof silk or like textile material, a spindle inclined from the verticalposition, bearings therefor, driving means therefor, a disk secured tothe upper end of said spindle, a non-rotatable unbalanced holder whollysupported from its lower end by said spindle, a carrier mounted on saidholder, a receiving bobbin located above said carrier, a second carrierlocated at the opposite side of said bearings from the first mentionedcarrier, the strand therefrom passing through said bearings and drivingmeans outside of said disk and first mentioned carrier to said receivingbobbin,

and an eye on said disk engaging the strand from the lower carrier towrap it about the strand from the upper carrier.

'4. In a machine of the character described for twisting togetherstrands of silk or like textile material, a spindle, means forsupporting and rotating it, an end of said spindle being recessed, adisk secured to the recessed end of, and rotatable with said spindle, anon-rotating unbalanced support yieldingly connected with a stem locatedin the recessed end of the spindle, a strand carrier mounted on saidsupport, a second strand carrier located at the opposite side of thespindle bearings from the first, the strand therefrom passing throughsaid bearings and outside of said disk and first mentioned carrier, areceiving bobbin to take the strand from both carriers, and an eye onsaid disk engaging the strand from the second carrier to Wrap it aboutthe strand from the first carrier at a point between it and saidreceiving bobbin.

5. .In a machine of the character described for twisting togetherstrands of silk or like textile material, bearings, an upright spindlewith one end supported in said bearings, driving means for the spindle,a flier mounted on the upper free end of said spindle, a non-rotatingunbalanced support mounted in the upper end of said spindle, a bobbinmounted on said support, a second bobbin located at the opposite side ofsaid hearing from the first mentioned bobbin with its strand passingthrough said bearings and outside of and engaged by said flier andaround said first mentioned bobbin, a receiving carrier to take thestrands from said bobbins, the strand from the first mentionedbobbinfbeing free and unconfined between the bobbin and carrier wherebyit is free to move with and follow' the strand from the second mentionedbobbin which is being wrapped about it.

6. In a machine of the character described for twisting together strandsof silk or like textile material, a rotatable flier, a spindle at theupper end of which said flier is mounted, bearings and driving means forthe spindle, a strand carrier located below the'bearings, a bobbinspindle non-rotatably supported in the upper end of said flier spindle,a bobbin receiving stem spring connected to said bobbin spindle, acarrier mounted thereon, a strand from the lower carrier passing throughsaid bearings andspindle and engaged by said flier to wrap it onto thestrand from the upper carrier, and a receiving bobbin for the twistedthread.

7 In a machine ofrthe character described, for twisting together strandsof silk or like textile material, a flier spindle with means forsupporting and driving it, a flier mounted thereon at one side of saidsupportin and driving means, a non-rotatable bobbin spindle supported atone end by said flier spindle above said flier, the other end of saidbobbin spindlebeing offset, a carrier supported on the offset end ofsaid bobbin spindle, a resilient device forming a portion of saidcarrier support, a second carrier located at the opposite side of saidspindle supporting and driving means from the first carrier, the strandtherefrom passing through said supporting and driving means and outsideof said first carrier, and adapted f to be engaged by said flier to wrapit on the strand from the first carrier, and a receiving bobbin for thecompleted thread.

J AMES, LLOYD MACFARLANE Witnesses:

J. S. MAorAnLANE, M. E. ONEILL.

